White exhaust smoke is usually the result of condensation and moisture buildup in the exhaust system; it can also be the result of burning coolant within the engine. When white exhaust smoke is thin and vaporous, it usually does not signify a problem within the car.Know More
If the exhaust smoke is thicker and comes out in large clouds, it generally means that there is something burning within the car. A blown head gasket could be a possible reason for coolant burning in the car; a cracked engine block is also a reason for coolant burning in the vehicle.
Gray smoke that is coming out of a tail pipe is usually a major cause for concern. Gray smoke often signals that there is a problem with the oil system of the car. The car may be burning more oil than necessary and may be running hotter than it should.
Black smoke coming out of the back of a tail pipe signals that too much fuel is being used and burned up. If the vehicle is burning too much fuel, it should be fixed to ensure that money is not being wasted on fuel that is simply burning up and not being used to power the vehicle. Diesel vehicles are the most common vehicles to have black smoke come from the exhaust pipe.Learn More
Black smoke that is coming out of an exhaust pipe is usually because something inside of the fuel injection system is dirty; it can also be the result of dirt somewhere in the exhaust system. Black smoke is a normal and harmless occurrence in vehicles that are powered by diesel fuel.Full Answer >
Blue or gray smoke coming from an exhaust pipe indicates either an oil leak or piston wear. Typically, oil leaks pass the seals and get into the engine cylinder. From there, they come into contact with gasoline and burns, producing blue smoke. When oil leaks into the cylinder, it produces rough idle, misfires and could affect the spark plugs, according to CarsDirect.Full Answer >
Reasons for a smoking engine include a clogged air filter, blocked manifold, oil leaking on to the exhaust system, leaking head gasket or a cracked cylinder head. Regardless of the reason, it is important to visit a mechanic if a car engine starts to smoke, or permanent damage can happen.Full Answer >
Water can be used in place of engine coolant, but it is not recommended. Radiator coolant is designed to keep the radiator contents from freezing and the engine block from cracking. It is also raises the boiling point of water to help keep the engine from running too hot.Full Answer >